Convert //cc from scoped_ptr to std::unique_ptr.

cc/scheduler/compositor_timing_history_unittest.cc

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "cc/scheduler/compositor_timing_history.h"
 
 #include "base/macros.h"
 #include "cc/debug/rendering_stats_instrumentation.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
@@ skipping 25 matching lines @@
         timing_history_(this, rendering_stats_.get()) {
     AdvanceNowBy(base::TimeDelta::FromMilliseconds(1));
     timing_history_.SetRecordingEnabled(true);
   }
 
   void AdvanceNowBy(base::TimeDelta delta) { now_ += delta; }
 
   base::TimeTicks Now() { return now_; }
 
  protected:
-  scoped_ptr<RenderingStatsInstrumentation> rendering_stats_;
+  std::unique_ptr<RenderingStatsInstrumentation> rendering_stats_;
   TestCompositorTimingHistory timing_history_;
   base::TimeTicks now_;
 };
 
 base::TimeTicks TestCompositorTimingHistory::Now() const {
   return test_->Now();
 }
 
 TEST_F(CompositorTimingHistoryTest, AllSequential_Commit) {
   base::TimeDelta one_second = base::TimeDelta::FromSeconds(1);
@@ skipping 236 matching lines @@
 
   base::TimeDelta begin_main_frame_to_commit_duration_expected_ =
       begin_main_frame_queue_duration_critical +
       begin_main_frame_start_to_commit_duration;
   EXPECT_EQ(begin_main_frame_to_commit_duration_expected_,
             timing_history_.BeginMainFrameToCommitDurationEstimate());
 }
 
 }  // namespace
 }  // namespace cc